Government figures show that almost 12 million women will be affected by changes to tax credits and public sector pensions, compared with just 5.3 million men.

An analysis shows that women will lose £1.7 billion, compared with just £640 million lost by men. Changes to tax credits alone will cost households £1,200 each.

The Coalition has repeatedly come under attack over the effect of its policies on women from groups such as the Women’s Institute. A forum of 37 Conservative MPs has also warned that more could be done for female voters.

Ed Miliband, the Labour leader, yesterday described the cuts as “the biggest attack on women in a generation”.

He said there was a “quiet crisis facing people behind front doors and around the kitchen table in millions of homes”.

The cuts were announced on Tuesday by George Osborne, the Chancellor, partly to help pay for a delay to fuel duty rises and measures to boost business.

Yvette Cooper, the shadow home secretary, also criticised the cuts for being “deeply unfair on women”.

“They clearly don’t understand the pressures many women are facing at the moment, especially women with children who will lose most of all,” Miss Cooper said. Anna Bird, the acting chief executive of the Fawcett Society, a group campaigning for gender equality in Britain, said the latest cuts “made an already bad situation worse”.

“Capping public sector pay will impact disproportionately on women, who make up the bulk of the public sector workforce,” she said.

“This real-terms decrease in take-home pay will see millions of women who are already struggling to make ends meet trying to survive on tighter budgets than ever.”

However, the Government said the figures offered a “completely distorted view of what the Government is doing to support women”.

“They totally ignore the £650 million the Government committed this week to doubling free child care for two year-olds, which will help women back into work, along with an increase in the Child Tax Credit of up to £135 per child,” a Treasury spokesman said.

“There is absolutely nothing fair about running huge budget deficits and burdening future generations with the debts we cannot afford to pay. If the deficit is not tackled now, the impact on women and families will be worse in the long term, with less money to deliver the public services that women rely on.”

The figures also show that cuts to tax credits would theoretically push 100,000 children into poverty. People officially living in poverty are those who survive on less than 60 per cent of the average income. For a family with two children, this equates to less than £288 per week.